Fruit Color: Brownish or yellowish-brown Fruit Notes: Fruits are cylindrical to barrel-shaped and hard, spiny burs; green drying to brown; burs can stick to fur and clothing and can be very difficult to extract.Seed Notes: Burs contain 2 seeds each in their own compartment. One of the seeds in each bur may germinate the following year with the other seed taking at least 2 years to germinate.